GB2332162A - Grinding Discs - Google Patents
Grinding Discs Download PDFInfo
- Publication number
- GB2332162A GB2332162A GB9726181A GB9726181A GB2332162A GB 2332162 A GB2332162 A GB 2332162A GB 9726181 A GB9726181 A GB 9726181A GB 9726181 A GB9726181 A GB 9726181A GB 2332162 A GB2332162 A GB 2332162A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- slots
- grinding
- apertures
- workpiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/12—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with apertures for inspecting the surface to be abraded
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
A grinding disc (2) for use in an edge grinder has apertures such as slots (4) in it to allow a view of a workpiece through the disc when the disc is in use.
Description
1 GRINDING DISC 2332162 The present invention relates to grinding discs.
Illustrative embodiments of the invention relate to grinding discs for use in edge grinders. The present invention also relates to a hand-held power tool which uses a grinding disc. An example of such a hand-held tool is an edge grinder and the invention will be discussed by way of example with reference to an edge grinder.
Hand-held, powered, edge grinders are well known. Such a grinder uses a circular grinding disc, which comprises a substrate to which an abrasive material is bonded. When such a hand-held grinder is used, the disc may be in the line of sight between the user and the work-piece, hiding the work piece. That can make use of the grinder difficult.
According to the present invention, there is provided a grinding disc for an edge grinder, the disc having slots and/or apertures therein allowing a workpiece to be visible through the disc when the disc rotates in use.
The provision of the slots and/or apertures, renders the disc semitransparent when rotated at its normal operational rate. Thus the work piece can be seen.
The slots and/or apertures can take a variety of forms. For example at least one of the slots may extend to the outer periphery of the disc. Preferably all the slots extend to the outer periphery. The slots are preferably radial but could be inclined to the radial direction.
Instead of slots other shaped apertures could be used.
It will be appreciated that it is essential that the grinding disc is not unduly weakened by the provision of too many slots or slots which are too big. Also, appropriate safety precautions must be taken when using discs in accordance with this invention.
For a better understanding of the present invention, reference will now be made, by way of example, to the accompanying drawing in which:
Figure I is a diagram of an illustrative grinding disc according to the invention.
2 The disc of Figure 1, comprises a substrate 2 to which abrasive material is bonded. The substrate and abrasive material are well known in the art. In this preferred embodiment, the substrate comprises glass cloth bonded with a cured phenolic resin. The abrasive material may be carborundum or any other well known 5 abrasive material.
Four radial slots 4 are forined in the disc, each slot extending to the periphery of the disc. The radially inner ends 6 of the slots are smoothly curved.
Experiments have shown that the disc allows a view of a workpiece to which it is applied in use. The disc functioned normally.
Various modifications may be made. For example the substrate of the disc could be a metal disc with an abrasive facing. The metal may be ferrous or nonferrous.
The slots may be inclined to the radial direction.
The number of slots may be other than 4 provided that there are sufficient to allow the workpiece to be seen through the disc in use thereof. For example there may be 5 or more slots.
Not all, or even any, of the slots need extend to the periphery of the disc.
The slots may be replaced by other apertures, for example circular holes arranged in patterns which allow a view of the workpiece through the disc when the disc is rotated in use.
The invention may be applied to discs of various sizes, e.g. 4 inch (102 mm), 41/2 inch (115 min) or 9 inch (229 mm) 3
Claims (6)
1. A grinding disc for an edge grinder, the disc having slots and/or apertures therein allowing a workpiece to be visible through the disc when the disc rotates in 5 use.
2. A disc according to claim 1, having slots therein.
3.
A disc according to claim 2, wherein the slots are radial.
4. A disc according to claim 2 or 3, wherein at least one of the slots is openended at the outer periphery of the disc.
5. A grinding disc substantially as hereinbefore described with reference to the 15 accompanying drawing.
6. A hand-held powered edge grinder comprising a disc according to any preceding claim.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9726181A GB2332162B (en) | 1997-12-12 | 1997-12-12 | Grinding disc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9726181A GB2332162B (en) | 1997-12-12 | 1997-12-12 | Grinding disc |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9726181D0 GB9726181D0 (en) | 1998-02-11 |
GB2332162A true GB2332162A (en) | 1999-06-16 |
GB2332162B GB2332162B (en) | 2002-09-18 |
Family
ID=10823437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9726181A Expired - Lifetime GB2332162B (en) | 1997-12-12 | 1997-12-12 | Grinding disc |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2332162B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014177374A1 (en) * | 2013-05-02 | 2014-11-06 | Bayerische Motoren Werke Aktiengesellschaft | Rotary grinding tool |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB766633A (en) * | 1900-01-01 | |||
GB523879A (en) * | 1939-02-13 | 1940-07-24 | James Henry Fletcher | Improvements relating to abrasive wheels for surface, former and other grinding |
GB766651A (en) * | 1952-12-31 | 1957-01-23 | Werner Stephan | Improvements in or relating to the grinding of workpieces |
GB1147542A (en) * | 1966-04-25 | 1969-04-02 | Alton Earl Tobey | Air cooled tyre abrading rasp |
EP0015769A1 (en) * | 1979-03-09 | 1980-09-17 | De Beers Industrial Diamond Division (Proprietary) Limited | Circular saws |
GB1581226A (en) * | 1977-08-08 | 1980-12-10 | Thomas J F | Rotary cutting and/or grinding tools |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB522040A (en) * | 1938-12-03 | 1940-06-06 | Carborundum Co | Improvements in or relating to abrasive articles |
GB740542A (en) * | 1952-07-28 | 1955-11-16 | Harry Arthur Simpson | Improvements in and relating to grinding wheels, discs and the like |
GB774813A (en) * | 1953-11-12 | 1957-05-15 | American Viscose Corp | Molded abrasive articles and method for producing them |
US3500592A (en) * | 1968-01-09 | 1970-03-17 | Robert A Harrist | Plastic hub and the application thereof to an abrasive wheel |
AU699881B2 (en) * | 1995-12-08 | 1998-12-17 | Norton Company | Backing plates for abrasive disks |
-
1997
- 1997-12-12 GB GB9726181A patent/GB2332162B/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB766633A (en) * | 1900-01-01 | |||
GB523879A (en) * | 1939-02-13 | 1940-07-24 | James Henry Fletcher | Improvements relating to abrasive wheels for surface, former and other grinding |
GB766651A (en) * | 1952-12-31 | 1957-01-23 | Werner Stephan | Improvements in or relating to the grinding of workpieces |
GB1147542A (en) * | 1966-04-25 | 1969-04-02 | Alton Earl Tobey | Air cooled tyre abrading rasp |
GB1581226A (en) * | 1977-08-08 | 1980-12-10 | Thomas J F | Rotary cutting and/or grinding tools |
EP0015769A1 (en) * | 1979-03-09 | 1980-09-17 | De Beers Industrial Diamond Division (Proprietary) Limited | Circular saws |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014177374A1 (en) * | 2013-05-02 | 2014-11-06 | Bayerische Motoren Werke Aktiengesellschaft | Rotary grinding tool |
DE102013218233A1 (en) * | 2013-05-02 | 2014-11-06 | Bayerische Motoren Werke Aktiengesellschaft | Rotating grinding tool |
Also Published As
Publication number | Publication date |
---|---|
GB9726181D0 (en) | 1998-02-11 |
GB2332162B (en) | 2002-09-18 |
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